Access Restriction Bypass Affecting notebook Open this link in a new tab package, versions [,6.4.12)

  • Attack Complexity


  • Confidentiality


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  • snyk-id


  • published

    17 Jun 2022

  • disclosed

    16 Jun 2022

  • credit


How to fix?

Upgrade notebook to version 6.4.12 or higher.


notebook is a web application that allows you to create and share documents that contain live code, equations, visualizations, and explanatory text.

Affected versions of this package are vulnerable to Access Restriction Bypass. When a fully authenticated request is sent to the notebook server which is configured with ContentsManager.allow_hidden = False, it is possible to access arbitrary hidden files or arbitrary files in hidden directories.


  1. Do not run the notebook server in a directory with hidden files, use subdirectories.

  2. Use a custom ContentsManager with additional checks for self.is_hidden(path) prior to completing actions.